builtnotbought89'

K so I've been wanting to know what axles, tcase, & trans I have! I already sent a build sheet request to crystler with still no reply!?!? So if u guys know what I'm running or where I can find out I would be greatful to say the least! Its a 1989 XJ 2 door sport, 4.0 I6, 4x4, & NO tow package...
Thanks

rweaver138

you have over 500 posts and dont know what parts you have?
well to start off your front axle is a dana 30, and rear axle most likely is a dana 35. t-case is either np242 or np231 depending on if you have full time or not. full time 4 wheel drive = np242.

rweaver138

[edit] Manual transmissions

• 1984 – 1987 : Aisin-Warner AX4 4-speed manual, used with 2.5 L I4 only, 21 spline output.
• 1984-only : Borg-Warner T-4 4-speed manual, used with 2.5 L I4 only, 21 spline output.
• 1984-only : Borg-Warner T-5 5-speed manual, used with 2.5 L I4 and 2.8 L V6, 21 spline output.
• 1987 – Mid-1989 : Peugeot BA-10/5 5-speed manual used with 4.0 L I6, 21 spline output.
• 1984 – 2000 : Aisin-Warner AX5 5-speed manual, used with 2.5 L I4, 2.1 L I4 diesel, and 2.8 L V6, 21 spline output.
• Late-1989 – 1999 : Aisin-Warner AX15 5-speed manual, used with 4.0 L I6, 23 spline output.
• 2000 – 2001 : New Venture Gear NV3550 5-speed manual, used with 4.0 L I6, 23 spline output.

[edit] Automatic transmissions

• 1984 – 1986 : Chrysler A904 3-speed automatic, used with 2.5 L I4 and 2.8 L V6.
• 1994 – 2000 : Chrysler 30RH 3-speed automatic, used with 2.5 L I4.
• 1987 – 2001 : Aisin-Warner AW-4 4-speed automatic used with 2.5 L I4 and 4.0 L I6.

[edit] Transfer cases

All the transfer cases used on the Cherokee were chain driven with aluminum housings. Command-Trac was standard on XJ models built with 4WD.

• 1984 – 1987 : New Process NP207 "Command-Trac", part-time only, 2.61:1 ratio with low range
• 1987 – 2001 : New Process NP231 "Command-Trac", part-time only, 2.72:1 ratio with low range
• 1987 – 2001 : New Process NP242 "Selec-Trac", full-time/part-time, 2.72:1 ratio with low range

[edit] Axles

The Jeep XJ utilizes front and rear solid (live) axles as opposed to independent front and/or rear axles. This configuration allows the XJ to have superior off-road capability and performance at the expense of some on-road comfort and drivability. Mid-1985 and later two wheel drive models used the same basic suspension with a single tube connecting axle ends with no differential.
[edit] Front Axle

• 1984 – 1996 : Dana 30, High Pinion, Reverse Cut, 27-spline axleshafts (1989 – 1995 : with ABS used 5-297x universal joints, non-ABS had 5-260x universal joints. Note: Certain XJ models were produced with constant-velocity joints instead of universal joints.)
• 1996 – 1999 : Dana 30, High Pinion, Reverse Cut, 297x/760 universal joint, 27-spline axleshafts.
• 2000 – 2001 : Dana 30, Low Pinion, Standard Cut, 297x/760 universal joint, 27-spline axleshafts.
• 1985 – 2001 : Straight non-driven front axle for two wheel drive only.

[edit] Rear Axle

• 1984 – 1989 : Dana 35, non c-clip, with anti-lock braking system (ABS) or non-ABS.
• 1990 – 1996 : Dana 35, c-clip, ABS or non-ABS.
• 1997 – 2001 : Dana 35, c-clip, ABS.
• 1991 – 1996 : Chrysler 8.25", c-clip, non-ABS, 27-spline axleshafts.
• 1997 – 2001 : Chrysler 8.25", c-clip, non-ABS, 29-spline axleshafts.
• 1987 – 1990 : Dana 44, non-abs, 30-spline axleshafts.

[edit] Axle Gear Ratios

Jeep XJs came in several standard gearing ratios:

• 3.07:1, manual transmission, I6 engine.
• 3.54:1, automatic transmission, I6 engine with Dana 44 rear differential.
• 3.54:1, manual transmission, I4 diesel engine with Dana 35 rear differential.
• 3.55:1, automatic transmission, I6, V6 engines; manual transmission, I4 engine.
• 3.73:1, automatic transmission, I6, Tow Package, UpCountry Package.
• 4.10:1, manual transmission, V6; automatic transmission, I4 engine.
• 4.56:1, automatic transmission, I4, offroad or tow package

COSXJFAN

You have a Renix based EFI system, a AW-4 Transmission, if it's an auto, a Dana 30 front axle, more than likely a disco version, meaning that it disconnects midway on the pass. side, and a Dana 35 rear axle. They should be geared to 3.55, if you have not changed that. You should have a NP231 t-case, any other questions??

builtnotbought89'

Ya I know I've just never got into gearing in it, but I've been thinkin about getting a locker! So ur positive I have D30 front? What year did they switch to the 8.25 rear?

builtnotbought89'

Damn u guys are fast! Lol thanks

rweaver138

all cherokees come stock with a d30 front. the 8.25's are used since 91 and are 27 spline (weaker) and in 97 they had 29 spline. so you have the dana 35

rweaver138

and one more thing i would HIGHLY recommend not locking your dana 35. look for a chrysler 8.25 they are everywhere

builtnotbought89'

So the info above shows that they did the rear D35 with/without abs & D44 without in '89 so is there an chance that it has the D44? Just hopping! Lol

rweaver138

very slim chance, but if you have one congrats

rivercrazy

Ryan you got a big red beast. What else do you need to know?! lol.

This might help:

builtnotbought89'

Ya. Aaron its The Red Rock Monster! Lol
K so I'm running; AW-4, NP231, D30 front, D35 rear, 3.55:1. That's what I'm talking about thanks guys!!!
Now that that's done & I know I have a weak D35! Should I just weld the spider gears & keep my eye out for an 8.25!
I hope the J10 is still in the JY after xmass!!!!!!

rivercrazy

I'd wait for the 8.25 or a D44. It would be a PITA to drive that thing to the trails with your rear locked up.

Whats a J10??

builtnotbought89'

1970 J10 honcho- he says D44 front & D60 rear! Some good old fab work & they'll look nice under my rig! lol
https://www.cherokeeforum.com/f53/j1...ng-yard-30491/

rweaver138

i heard it takes ALOT of skill and work to fab a d44 front to fit under the cherokee